Method of scoring paper blanks.



' citizen of the United States of and Fig.

UNITED STATES P TENT curios.

DANIEL KELLEHER, uE SANDUSKY, OHIO, ASSIGNOR To THE HINDE & DAUGH IPAPER COMPANY, OF SANDUSKY, OHIO,

A CORPORATION OF OHIO.

Specification of Letters .Tatent.

Application filed October 16, 1914. Serial No. 866,993.

To all when). it may concern Be it known that I, DANIEL KELLEHER, a

America, re-

m'ding at Sandusky, in the-county of Erie and State of Ohio, have invented certain new and useful Improvements in Methods of Scoring Paper Blanks, of which the following is a specification, reference being bad therein to the accompanying drawings.

. The invention relates to the manufacture o scored paper blanks such as are used in i construction of paper boxes and similar articles, and it is the object of the invention to obtain a method of scoring which is lessinjurious to the stock, and which may be more quickly performed than the methods heretofore employed In the drawings: Figure 1 illustrates a side elevation of an apparatus used for scoring by my improved method; Fig. 2-is a cross section thereof; Fig. 3 is a cross sec- .tion through a scored blank when.v removed,

f1 om the machine and bent in one direction; 4 is a similar view showing the blank b nt for folding in the opposite direction.

In the present state of the art it is usual to score cellular paper blanks by pressing a scoring blade against one'side of the'blank and against an abutment on the opposite side, thereby crushing down the cellular structure. The operation is also performed in some cases by scoring disks between which the blank is zfed and which similarly crush down the cellular structure. Scores formed by either of the methods above described permit the blank to be folded in one direction, but a bending in the reverse direction will stress the material so as t c endanger breaking. With my improved method the score is formed by moving a tongue member at an angle-into a groove member, the action being progressi e from one end of the score to the other and so gradual as to stock to'be drawn around the bend without undue stress. This is preferably accomplishedby formin the tongue member in the cross section of a traveling belt and the grom'e member in the cross section of an adjacent traveling bolt, the two belts being in site sides permit the I endand enters into engagement at the opposite end.

I .As shown in the drawings, A is an endless belt running over pulleys B, and of a cross section shown in Fig. 2, in which C is a projecting tongue. D is a similar endless belt running over pulleys E and ofa cross section having a groove F for receiving the tongue 0 and beveled portions G on opp'oof said groove. The two belts are so driven that their adjacent strands are traveling in the same direction, and as indicated in Fig. 1 these strands are in slightly angular relation to each other. Thus, when a cellular blank is fed in between the belts at the open end it will be fed along and the material will be progressively pressed'downward by the tongue portion G into the groove portion F. The gradual and progressive operation will permit the drawing in of the material longitudinally of the blank to compensate for the bend and with- Patented Sept. 5, 1916.

draw the paper forming the crease equally fronibotb. sides of the blank. It will be observed that by reason of the bevels G on opposite sides of the grooved portion F, the length of the paper on one side of the blank is substantially equal to that on the other side. In other words the scored portion is so fashioned that, neither side of the paper blank is placed under a tension greater than that on the other side, and consequently the stock is not weakened.

' What'I claim as my invention is 1. The method of scoring cellular paper blanks, comprising the simultaneous creasing of the stock along parallel lines and toward opposite sides to form a section flexible in opposite directions 2.- The method of scoring cellular blanks, comprising the simultaneous and longitudinally progressive creasing of the material alo'ngarallcl lines and toward opposite sides 0 x the stock to form a section flexible in opposite directions.

3. The method of scoring cellular blanks,

comprising the placing of the stock between opposlte tongue and groove members, and

4. The method of scoring cellular paper blanks consisting in feeding ,the stock between ad acent; members moving inrecti-' hnearly convereme Baths, one 01 which w members has a tongue progressively enter- 1') ing the stock to form a crease.

In tesjqmon'yp Whereuf L mfix my slgnature inpres'ence of iwoi witnesses.

DANlEL KELLEHER.

Y itnessesf V I v y l l SIDNEY 'Fnonmmx,

ALDE KY. QALLUP. 

